Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part

a technology of aromatic polycarbonate resin and production process, applied in the direction of manufacturing tools, instruments, lenses, etc., can solve the problems of poor solvent solubility, inferior moldability, and reduced transparency of molded articles

Inactive Publication Date: 2006-09-26
IDEMITSU KOSAN CO LTD
View PDF5 Cites 66 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0197]According to the present invention, capable of being provided are an aromatic polycarbonate resin which is excellent in a transparency, a heat resistance and a mechanical strength and which has a good moldability, an effective production process for the same, an optical part-molding material which is excellent in an optical characteristic and a mechanical strength and which has a particularly high heat resistance and an optical part prepared by molding the same.

Problems solved by technology

This aromatic polycarbonate resin in which an adamantane skeleton is introduced into a structural unit of an aromatic polycarbonate polymer chain has a high heat resistance but has the difficulties that it has a poor solubility in solvents because it is liable to be crystallized and it is inferior in a moldability and that the molded article is reduced in a transparency.
In the above engineering plastics, however, a heat resistance and an impact resistance are not satisfactory in, for example, polymethyl methacrylate, and a heat resistance in forming an electrical insulating layer is not necessarily satisfactory in polycarbonate and polyacrylate.
Further, polyethersulfone has the difficulties that it has a high heat resistance but is colored amber and that optical anisotropy is liable to be brought about by slight molecular orientation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part
  • Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part
  • Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part

Examples

Experimental program
Comparison scheme
Effect test

example i-1

[0088]Methylene chloride 700 ml which was a solvent was added to a solution prepared by dissolving 45 g of 2,2-bis(4-hydroxyphenyl)adamantane and 25 g of 1,1-bis(4-hydroxyphenyl)cyclohexane in 1,360 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal, and phosgene gas was blown into the above solution for 30 minutes in a proportion of 950 ml / minute under cooling while stirring. Then, this reaction liquid was left standing still and separating, and a methylene chloride solution of an oligomer having a polymerization degree of 2 to 5 and having a chloroformate group at a molecular end was obtained in the organic layer.

[0089]Methylene chloride was added to 110 ml of the methylene chloride solution thus obtained to control the whole amount to 150 ml, and then a solution prepared by dissolving 5 g of 1,1-bis(4-hydroxyphenyl)cyclohexane in 50 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal was added thereto. Further, 0.2 g of p-t...

example i-2

[0094]Methylene chloride 700 ml which was a solvent was added to a solution prepared by dissolving 75 g of 2,2-bis(4-hydroxyphenyl)adamantane in 1,360 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal, and phosgene gas was blown into the above solution for 30 minutes in a proportion of 950 ml / minute under cooling while stirring. Then, this reaction liquid was left standing still and separating, and a methylene chloride solution of an oligomer having a polymerization degree of 2 to 5 and having a chloroformate group at a molecular end was obtained in the organic layer.

[0095]Methylene chloride was added to 110 ml of the methylene chloride solution thus obtained to control the whole amount to 150 ml, and then a solution prepared by dissolving 6 g of 9,9-bis(3-methyl-4-hydroxyphenyl)fluorene in 50 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal was added thereto. Further, 0.2 g of p-tert-butylphenol was added thereto as a mol...

example i-3

[0100]Methylene chloride 900 ml which was a solvent was added to a solution prepared by dissolving 170 g of 1,1-bis(4-hydroxyphenyl)cyclohexane in 1,530 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal, and phosgene gas was blown into the above solution for 30 minutes in a proportion of 950 ml / minute under cooling while stirring. Then, this reaction liquid was left standing still and separating, and a methylene chloride solution of an oligomer having a polymerization degree of 2 to 5 and having a chloroformate group at a molecular end was obtained in the organic layer.

[0101]Methylene chloride was added to 110 ml of the methylene chloride solution thus obtained to control the whole amount to 150 ml, and then a solution prepared by dissolving 6 g of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)adamantane in 50 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal was added thereto. Further, 0.2 g of p-tert-butylphenol was added thereto ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
mole ratioaaaaaaaaaa
mole ratioaaaaaaaaaa
Login to View More

Abstract

The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.

Description

TECHNICAL FIELD[0001]The present invention comprises the first invention, the second invention and the third invention, and the first invention and the second invention relate to an aromatic polycarbonate resin and a production process for the same, more specifically to an aromatic polycarbonate resin which is excellent in a transparency, a heat resistance and a mechanical strength and which has a good moldability and an effective production process for the same. The third invention relates to an optical part-molding material and an optical part, more specifically to an optical part-molding material suited to a molding material for an optical disc substrate such as a digital audio disc, a digital video disc and an optical memory disc, various lenses such as a lens for an optical pickup, spectacle lenses, contact lenses and a lens sheet, an optical sheet substrate such as a prism, a mirror, an optical fiber, a liquid crystal display and a portable key sheet and an optical functional ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): C08G64/00C08G64/06G11B7/2534
CPCG11B7/2534C08G64/06G02B1/00
Inventor MORISHITA, HIRONOBUTAMURA, HIROYUKIHAMADA, YASUSHI
Owner IDEMITSU KOSAN CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com